Doc: Removed TF-M prefix from document heading

This patch removes the TF-M/Trusted Firmware prefix from the
title heading across the documentation.

Change-Id: I60e0c6e48615f67ee040a0d6dbc7d6f1873856e7
Signed-off-by: Galanakis, Minos <minos.galanakis@arm.com>
diff --git a/docs/design_documents/tfm_crypto_design.rst b/docs/design_documents/tfm_crypto_design.rst
index c0cf769..a8e260d 100644
--- a/docs/design_documents/tfm_crypto_design.rst
+++ b/docs/design_documents/tfm_crypto_design.rst
@@ -1,5 +1,5 @@
-TF-M Crypto Service design
-==========================
+Crypto Service design
+=====================
 
 :Author: Antonio de Angelis
 :Organization: Arm Limited
diff --git a/docs/design_documents/tfm_its_service.rst b/docs/design_documents/tfm_its_service.rst
index 2de1e84..27f9300 100644
--- a/docs/design_documents/tfm_its_service.rst
+++ b/docs/design_documents/tfm_its_service.rst
@@ -1,6 +1,6 @@
-===========================================
-TF-M Internal Trusted Storage (ITS) Service
-===========================================
+======================================
+Internal Trusted Storage (ITS) Service
+======================================
 
 :Author: Jamie Fox
 :Organization: Arm Limited
diff --git a/docs/design_documents/tfm_partition_and_service_design_document.rst b/docs/design_documents/tfm_partition_and_service_design_document.rst
index 85b9f59..dc66ad7 100644
--- a/docs/design_documents/tfm_partition_and_service_design_document.rst
+++ b/docs/design_documents/tfm_partition_and_service_design_document.rst
@@ -1,6 +1,6 @@
-##########################################
-TF-M Partition and Service Design Document
-##########################################
+#####################################
+Partition and Service Design Document
+#####################################
 
 :Authors: Summer Qin
 :Organization: Arm Limited
diff --git a/docs/design_documents/tfm_psa_inter_process_communication.rst b/docs/design_documents/tfm_psa_inter_process_communication.rst
index ae832e5..acb9c89 100644
--- a/docs/design_documents/tfm_psa_inter_process_communication.rst
+++ b/docs/design_documents/tfm_psa_inter_process_communication.rst
@@ -1,6 +1,6 @@
-################################
-TF-M Inter-Process Communication
-################################
+###########################
+Inter-Process Communication
+###########################
 
 :Authors: Ken Liu, Mingyang Sun
 :Organization: Arm Limited
diff --git a/docs/design_documents/tfm_secure_partition_runtime_library.rst b/docs/design_documents/tfm_secure_partition_runtime_library.rst
index 844f9b7..6977f04 100644
--- a/docs/design_documents/tfm_secure_partition_runtime_library.rst
+++ b/docs/design_documents/tfm_secure_partition_runtime_library.rst
@@ -1,6 +1,6 @@
-#####################################
-TF-M Secure Partition Runtime Library
-#####################################
+################################
+Secure Partition Runtime Library
+################################
 
 :Authors: Ken Liu
 :Organization: Arm Limited